Source: Frank, et.al., "Induced Abortion Operations and Their Early
Sequelae," Journal of the Royal College of General Practitioners
35(73):175-180, April 1985; Grimes and Cates, "Abortion: Methods and
Complications", in Human Reproduction, 2nd ed., 796-813; M.A.
Freedman, "Comparison of complication rates in first trimester abortions
performed by physician assistants and physicians," Am. J. Public
Health 76(5):550-554, 1986).